[issue10030] Patch for zip decryption speedup

[Antoine Pitrou]

Antoine Pitrou added the comment:

> If the encryption is so horrible why is there any support (with bad
> performance) at all in Python?
> It would be better to remove it altogether.

We don't remove it as it would break existing programs which rely on
this feature. However adding a bunch of C code to improve performance of
such a questionable feature is controversial.

I wouldn't be against the acceleration myself, however I am not
interested in reviewing or accepting it, sorry.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue10030>
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